Improvement in rotary pressure-blowers



W. PRUETT.

Rotary Pressure Blowers. Y

No.153,20,2. j Patentedlulyzmsm.

@mw www @We e@ THE GRAPHIC C PHOT0`LITH.39& 4| PARK FLACE,N.Y.

UNITED STATES.

PArnNT OFFIQE.

lVILLIAM FRUETT, OF KOKOMO, INDIANA, ASSIGNOR OF ONE-HALF HIS RIGHT TOTOBIAS L. VARNS, OF SAME PLACE.

IMPROVEMENT IN ROTARY PRESSURE-BLOWERS.

Specification forming parto( Letters Patent No. 153,202, dated July 21,1874; application filed December 22, 1873.

To all whom it may concern Be it known that I, WILLIAM Precari?, ofKokomo, county of Howard and State of Indiana, have invented a newand'useful Improvement in Rota-ry Pressure-Blowers; and I do herebydeclare that the following is a full, clear, and exact description ofthe saine, reference being had to the annexed drawing, making a part ofthis specitication, in which- Figure lis a plan. Fig. 2 is a' sideelevation. Fig. 3 is a vertical section from front to back, in the linew; and Fig. 4 is a horizontal longitudinal section in the line y.

Similar letters of reference indicate like parts.

The nature of my invention relates to that class of rotary air-blowerswhich act 011 the air or other fluid by direct action and pressure, anddoes not depend on a high velocity for its efficiency.

It consists of a simple mechanism which allows the two wings to rotatein respect to the revolving cylinder to which they are journaled, butprevent their turning with respect to a fixed point, and yet partake ofthe motion of the rotating cylinder carrying them, as will be more fullyhereinafter described.

The construction of my invention is as follows: A A is the base of themachine, into which the outside lfixed hollow cylinder B is bolted. Fourpins or studs, a a a a, project out from the base to which thecross-bars C C are bolted. rlhese bars form the journal-bearings c c forthe shaft carrying the revolving cylinder D. This cylinder is furtherprovided with permanent heads d d, closing the space between itsperiphery and the bore of cylinder B, and a close joint is made by themetallic packing-rings d1 d1, let into said heads d d; or other suitablepacking may be usedinstead. 'lwo revolving crescent-shaped wings, E E,are journaled into, and with their axes slightly within, the peripheryof cylinder D, at an equal distance apart. One side of these wings isconcave, as atc c, the other convex, as at c c.

-The cavities in cylinder D, giving room for the wings, are cast inlarger than said wings, and are not finished. Small recesses are formednear their edges, as seen at d2, which are afterward filled with anysuitable metal, which forms a close-fittin g joint with the win gs. Anadjustable gate or cut-off, F, is screwed to the base A, on a line withthe centers of cylinders B and D, midway through the opening' b of theformer, and just touching the lttter and its heads d d. The base A iscored out within, as seen in Fig. 3, and is provided with the openinga', leading out from' it, forining the exhaust. The mechanism operatingthe revolving wings E E is as follows: The journals holding them inposition in the heads d d project out some distance, to which theconnecting-rods G G are perinanentl y fastened. These coniiecting-rodshave their opposite ends journaled to the ring H at g g, as seen at Fig.2, while a third coiinecting-rod, I, acting` only as a steadying-bar, isjournaled at both ends, just inidwaybetween those marked G G. All theserods are of equal lengths and placed parallel with each other, rotatingthe ring H as the cylinder D revolves. To prevent the ring vibrating,the two concave shoes J J are brought against its periphery, as seen inFig. 2.

rlhe operation of my invention becomes obvious from the foregoing. Iowerbeing applied to the pulley K, a rotary motion is ii'n parted to thecylinder D in the direction indicated by the arrows. In Fig. 3 one ofthe wings is shown just opposite the gate F. As the cylinder revolves,the concavity of that wing allows it to pass the gate, as it is heldparallel with the saine. Having passed the gate the periphery ot' thecylinder at once takes its place, thus preventing the air below the gatefrom passing out. As the wing risesiii its parallel position it passesthe opening Z1, forcing before it all the air contained between the twowings and the two cylinders. Then the first wing has performed its part,the second is in position to begin, and so on alternately.

It will be observed that this machine, although mainly iiitendcd as apressure-blower for air, &c., can be adapted to force water and otherliquids. By reversing the order and forcing air or water at its uppeL`opening, the machine will give back a considerable proport-i011 ofpower.

The advantages I (5l-:uni for my improvement are, the ease with whichthese blowers niayvbe built, as the work can all be done by a lathe,mechanical in construction, not easily to get ont of order, and iseasily understood and l operated.

Having' thus described my invention, what I claim as new, and desire tosecure byLettcIns

